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Polynuclear rare earth organic complex, and preparation method and application thereof

An organic complex, nuclear rare earth technology, applied in the field of rare earth organic light-emitting materials, can solve the problem of insufficient overall performance, and achieve the effects of excellent solubility, easy implementation and high luminous efficiency

Inactive Publication Date: 2012-10-03
GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the complexes made of the above several organic ligands have certain electroluminescent properties and thermal stability properties, the overall performance is not comprehensive enough.

Method used

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  • Polynuclear rare earth organic complex, and preparation method and application thereof
  • Polynuclear rare earth organic complex, and preparation method and application thereof
  • Polynuclear rare earth organic complex, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] (1) Get the material shown in 0.5mmol formula IV, 1.5mmol 1,10-phenanthroline, 4.5mmol potassium tert-butoxide and place a there-necked flask of 150ml size with magnetic stirring, reflux device and dropping funnel , then add 80ml tetrahydrofuran (THF), stir to let the solid dissolve, at this time the solution is light yellow, and the temperature is raised to 60°C;

[0047]

[0048] Formula IV

[0049] (2) EuCl completely dissolved in 20ml absolute ethanol 3 ·6H 2 O (1.5mmol) solution was added dropwise into the there-necked flask through the dropping funnel, and along with the EuCl 3 ·6H 2 With the addition of O, the solution gradually changed from transparent light yellow to opaque milky yellow solution. Continue to react for 1 hour at 60°C;

[0050] (3) Add 3 mmol of dibenzoylmethane (DBM) into the there-necked flask, adjust the pH value of the solution in the there-necked flask to 7 with potassium tert-butoxide solution or dilute hydrochloric acid, and contin...

Embodiment 2

[0058] (1) Get the material shown in 0.5mmol formula IV, 1.5mmol 1,10-phenanthroline, 4.5mmol potassium tert-butoxide and place a there-necked flask of 150ml size with magnetic stirring, reflux device and dropping funnel , then add 75ml tetrahydrofuran (THF), stir to let the solid dissolve, and the solution is light yellow at this time, and the temperature is raised to 60°C;

[0059] (2) EuCl completely dissolved in 20ml absolute ethanol 3 ·6H 2 O (1.5mmol) solution was added dropwise into the there-necked flask through the dropping funnel, and along with the EuCl 3 ·6H 2 With the addition of O, the solution gradually changed from transparent light yellow to opaque milky yellow solution. Continue to react for 1 hour at 60°C;

[0060] (3) Add 3 mmol of thienoyl trifluoroacetone (TTA) into the three-necked flask, adjust the pH value of the solution in the there-necked flask to 7.5 with sodium tert-butoxide solution or dilute hydrochloric acid, and continue the reaction at 60...

Embodiment 3

[0068] (1) Get 0.5mmol of the material shown in formula IV, 1.5mmol 1,10-phenanthroline, and 4.5mmol potassium tert-butoxide to place a 150ml there-necked flask with magnetic stirring, reflux device and dropping funnel , then add 70ml tetrahydrofuran (THF), stir to let the solid dissolve, at this time the solution is light yellow, and the temperature is raised to 60°C;

[0069] (2) TbCl completely dissolved in 20ml absolute ethanol 3 ·6H 2 O (1.5mmol) solution was added dropwise into the there-necked flask through the dropping funnel, with the TbCl 3 ·6H 2 With the addition of O, the solution gradually changed from transparent light yellow to opaque milky yellow solution. Continue to react for 1.5h at 60°C;

[0070] (3) Add 3 mmol of dibenzoylmethane (DBM) into the three-necked flask, adjust the pH value of the solution in the there-necked flask to 6.5 with potassium tert-butoxide solution or dilute hydrochloric acid, and continue the reaction at 60° C. for 10 h;

[0071]...

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Abstract

The invention discloses a polynuclear rare earth organic complex, and a preparation method and application thereof. The preparation method comprises the following steps of: heating 1,10-phenanthroline and Tris-beta-diketone shown as a formula II to 40 to 90 DEG C to react; adding REC13.6H2O to continuously react for 0.5 to 1.5 hours at the temperature of between 40 and 90 DEG C; adding beta-diketone shown as a formula III to continuously react for 8 to 24 hours at the temperature of between 40 and 90 DEG C; after the reaction ends up and the product is cooled to room temperature, removing precipitate and drying a solvent by evaporation to obtain a solute; and reprecipitating and drying the solute to obtain the polynuclear rare earth organic complex shown as a formula I. The polynuclear rare earth organic complex of the invention has high stability, excellent dissolubility, high film-forming property, long service life, high luminous efficiency, low driving voltage, low cost and a wideapplication prospect, is suitable to be processed and made into large-area display devices, and overcomes the defect that the performance of the conventional rare earth organic complex is not complete.

Description

technical field [0001] The invention relates to the field of rare-earth organic luminescent materials, in particular to a polynuclear rare-earth organic complex and a preparation method and application thereof. Background technique [0002] Rare earth metal-organic complexes have the advantages of sharp emission spectrum bands, narrow half-peak width (less than 10nm), high color purity, and modified ligands do not affect the emission spectrum of the central ion; in addition, rare earth complexes are not affected by spin due to luminescence. The control of the law, the internal quantum efficiency can reach 100% in theory, these unique advantages make it become one of the hot research in the field of electroluminescence in recent years. [0003] The luminescence of rare earth complexes belongs to the central ion luminescence perturbed by the ligand, and the luminescence wavelength depends on the rare earth metal ion, and its emission peak is a sharp emission band, which is har...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07F5/00C09K11/06H01L27/32
Inventor 吕满庚杨朝龙罗建新梁利岩
Owner GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI